First of all guys you don't need to make fun of this guy. There is no sense in taking pleasure in someone's misfortunes.
Yes, it seems that he is making HORRIBLE financial decisions but instead of making fun try helping him/her.
Opening up another credit card will not help your credit score at all.
It will actually lower it if anything because 10% of your score is "new credit" and 15% is "length of credit history". Both of those areas will be negatively effected by opening up another credit card.